Express the work in terms of l, f, and θ. remember to use radians, not degrees, for any angles that appear in your answer.
1 answer:
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The solving for the first one should be like this
And the next part
After these manipulations just multiply them
And finally you need to square and simplify for the completed answer
And the next part
After these manipulations just multiply them
And finally you need to square and simplify for the completed answer